Bronzing-machine



(Nomoaei.) y zsllleetpsneem. l v. J. H. BINGHAM'.. f

BRUNZINGMAGHINE.

1 Patented; Oct. 11, L 881.

- UNITED STATES- PATENT OFFICE.

JOHN H. BINGHAM, OF HARTFORD, CONNECTICUT.

BRONZING-MACHINE.

SPECIFICATION forming part of Letters Patent No. l248,012, dated October 11, 1881 Application filed May 3,1881. (No model.)

To all whom it may concern Be it known that I, JOHN H. BINGHAM, of Hartford, in lthe county of Hartford and State of Connecticut, haveinvented a certain new and useful Improvement in Bronzing-Machines, vof which the following is 'a description, reference being had to the accompanying drawings, where- Figure lis a top view of a machine embodying my improvement, with a portion of the top plate represented as broken away-this for the purpose of exposing the meehanismbeneath also with a portion of the fountain 7 or stock# box77 represented as broken away-this for the purpose of showing the interior of the same. The feed-board is also omitted in this view. Fig. 2 is a side view of the machine, a' portion ofthe pulley appurtenant to the fountain-brush broken away. Fig. 3 is a view of the machine in vertical section on plane denoted by line x. Fig. 4'is a detail view of part of the bottom or under side of the fountain or stock-box. Fig. 5 is a detail sectional view of a portion of the machine on line rv', the section being transverse as to the whole machine, but extending down but a part of the depth of the machine. Fig. 6 is a detail side view of a very small part of the machine-that denoted by the dotted line .M -the object of which is to show the mortises or shaft-openings in the side of the table-box forthe short shaft-pin which each of the bronzing-rollers has at one or (in the case of the first of these rolls) at both ends.

The mechanism is contained mainly in the table-box, which, as a whole, I will designate by the letter a, which is supported on suitable legs, b.

The letter c denotes the receptacle for containing the bronze-powder before it is applied, which I will call the fountain 7 or stock-box. It is detachable from the boX a. d denotes the cover of this fountain. Within it is a rotating brusl1-wheel, e, for constantly agitating the bronze-powder and carrying it over and across the small exit-orifices f in the bottom thereof. This brush-wheel is hung at one end loosely on the shaft-pin g', and at the other end (fast by means of setscrew h) on the shaft-pin g, which are supported in proper bearings appurtenant to the table-box. The shaft-pin g has a pulley, t', thereon, and motion is communicated to the brush-wheel by beltj, running on this pulley.

Underneath thefountain and underneath the exit-orifices is a series of sliding val ves, 7c, provided With holes` k', corresponding to the exitoritices, which are moved to close and uncover the exitforifices by means ofthe screws l, hu'ng in aportion ofthe fountain or stock-box. The opening and closing motions of these valves is transversely of the length of the brush-wheel, enabling me to make and use these valves in sections, so that one part ofthe fountain can be adjusted in this respect independent of the other parts.

The letter m denotesr an endless apron passing around rollers n n and over (on the top of) rollers o o. The sheets to be bronzed are fed from the feed-board p upon this endless apron, and are delivered at the opposite end of the machine bronzed, the motion being imparted to roll n by belt running on pulley 1^. Roller n is hung in bearing-blocks s, which are adjustably held in mortises t, (made in the sides of the table-box,) the position of which can be regulated to give the endless belt greater or less tension by the screws u.

The letter o denotes a series (two or more) of bronzingrolls, made of any suitable material. I have found it well to make the body of Wood, with metallic ends, and covered, the first and last rolls with plush, and the intermediate with the fur of beaver or skunk. These rolls have shaft-holes in the ends of somewhat lar r diameter than the shaft-pins which cnterglehem, so as to allow the rolls some freedom of 11p-anddown movement, so thatthey can accommodate themselves to paper of different thicknesses.

These rolls rest on the endless apron and have their rotation given thereby. Intermediate between these bronzing-rolls are smaller rolls w, for insuring that the paper passing through the machine keeps flat d own on the endless apron. Each of these bronzing-rollshas alongitudinal reciprocation or vibration While it rotates, and this is (or may be, for I have different Ways of eecting it) given by cam-grooves y in the ends of the rolls, into which project pins z, stationarily xed in the top plate of the table-box. This longitudinal movement ofthe bronzingrolls, in combination with the rotary motion, is very effective in spreading the pow- IOO der upon each and every part of the passing sheet of paper.

The lettera/denotes a kind ofshaft-pin, with which one end of each of the bronZing-rolls (except the rst) is equipped. The pin has a collar, b', for bearing against the inner surface of one side of the tablebox; thence it passes a mortise, c', in the side of the table-box, of a shape that allows vertical adjustment of the shaft-pin, where it bears outside the table-box a washer, and mortise-closer, d', and outside that it bears a nut, e', which serves to fasten the pin in its place. The mortise i at the other end of each ofthe bronzing-rolls except the first, and at both ends of that, is so modified in shape as to permit the collar b to pass through it, (see Fig. 6,) and the washer and mortise-closer d is modilied in shape accordingly.

ing-rolls e, and to render unnecessary a frequent adjustment ot' the tension of the endless apron my, and also to furnish a firm bed for the action of the bronzing-rolls t, and so insure an even deposit of the bronze-powder, I use a diaphragm, m', placed in the table-box just below the bronzing-rolls, and under and in contact with the endless apron m as it passes between 3 5 the upper surfaces of rollers u n'.

I claim as my invention- 1. In combination, the fountain or stock-box, (the brush-wheel rotary therein,) the exit-oriflces therein, and the sectional sliding valves for the same, moving transversely of the length of the brush-wheel, all substantially as described, and for the purpose set forth.

2. The combination of the endless apron with the bronzing-rolls rotating thereon and impelled thereby, all substantially as set forth, and for the purpose described.

3. The shaft-pin fori-he end of the bronzingroll provided Withcollar, nut, and Washer, in combination with the mortise which permits the passage of the collar through the same, all substantially as set forth, and for the purpose described.

4. In combination, the fountain with its brush-wheel, the endless apron with the diaphragm on which it rests, and the bronzingrolls having longitudinal play and impelled by the endless apron, all substantially as described.

JOHN H. BINGHAM.

Witnesses:

CRAs. L. BURDETT, JAMES J. GREENE. 

